Mutual Inductance | Physics with Professor Matt Anderson | M24-09

Can the current in one coil somehow affect the current in another coil? Can two independent coils talk to each other?

Physics with Professor Matt Anderson

[roberto]

the way you draw the wires around the solenoid was beautiful

[sArts]

In his treatise on EM JC Maxwell talks about his experiments with this phenomenon and how frequency was very important to the amplitude of transfer (which seems to be the direction your lectures are going). Rather than just rely on theoretical physics, he and his colleagues ran the experiments of the day, analyzed them mathematically and explained what their findings were. They also came up with a bunch of formulas to explain the phenomena. Einstein called one of these “spooky action at a distance” as he “stood on the shoulders” of Maxwell. Tesla was probably one of the few to actually put it into useful work, Lord Kelvin was certainly impressed enough to help him get funding for his experiments in Colorado. Unfortunately we didn’t get to see all that work implemented, as he wanted it, for the benefit of mankind.

[fizixx]

Transformers rock. I've talked to electric company lineman and have gotten useful info that I could use in my classes. Mostly voltage values and currents and lots of 'stories', usually tragic ones, but I've heard some funny ones, too. 🙂

[sabareeshv]

Prof.Matt, Secondary coil current direction is mistaken think so?